chore(package): update babel-core to version 6.7.7
chore(package): update babel-core to version 6.7.7

https://greenkeeper.io/
xyzteam2016/keystone,joerter/keystone,Pop-Code/keystone,tony2cssc/keystone,Adam14Four/keystone,naustudio/keystone,alobodig/keystone,frontyard/keystone,michaelerobertsjr/keystone,matthewstyers/keystone,brianjd/keystone,sendyhalim/keystone,webteckie/keystone,rafmsou/keystone,vokal/keystone,danielmahon/keystone,matthewstyers/keystone,Yaska/keystone,pswoodworth/keystone,concoursbyappointment/keystoneRedux,suryagh/keystone,suryagh/keystone,ratecity/keystone,trentmillar/keystone,dryna/keystone-twoje-urodziny,andrewlinfoot/keystone,frontyard/keystone,benkroeger/keystone,w01fgang/keystone,concoursbyappointment/keystoneRedux,jacargentina/keystone,andrewlinfoot/keystone,Adam14Four/keystone,michaelerobertsjr/keystone,qwales1/keystone,trentmillar/keystone,danielmahon/keystone,tony2cssc/keystone,matthieugayon/keystone,Pop-Code/keystone,jacargentina/keystone,vokal/keystone,snowkeeper/keystone,xyzteam2016/keystone,frontyard/keystone,alobodig/keystone,jstockwin/keystone,everisARQ/keystone,snowkeeper/keystone,joerter/keystone,rafmsou/keystone,matthieugayon/keystone,cermati/keystone,vokal/keystone,qwales1/keystone,ratecity/keystone,w01fgang/keystone,matthewstyers/keystone,dvdcastro/keystone,trentmillar/keystone,naustudio/keystone,benkroeger/keystone,sendyhalim/keystone,Yaska/keystone,jstockwin/keystone,webteckie/keystone,pswoodworth/keystone,ONode/keystone,danielmahon/keystone,benkroeger/keystone,ONode/keystone,brianjd/keystone,pr1ntr/keystone,naustudio/keystone,andrewlinfoot/keystone,pr1ntr/keystone,cermati/keystone,Yaska/keystone,dvdcastro/keystone,linhanyang/keystone,everisARQ/keystone,dryna/keystone-twoje-urodziny